SU91890A1 - Method for isolating para-aminosalicylic acid - Google Patents

Description

is 3.5 seconds for the IR reacted No. 91890, the mate nocjre product excretion is directed to the ia pei-generation of metaaminophenol, which then (returns to the next. Part of the mother liquor, which is potassium bisulfate,; southerly be returned, as indicated, first: o phase for first acidification. Sulfur gas contained in bisulfite mother liquids is regenerated by a known method, as an example, by decomposition with sulfuric acid. The use of sulfur Iaaa for iodine acid)): stem 1. salts containing paraaminoalicylic acid, zasch, solutions of extracting acid from oxygen, which prevents aminofsnol from being dehydrated and makes it easier to reheat. The barbstage of sulfur dioxide contributes to the well-being of 11 | Ivg ;; nude and uniform, iKOM release of the product. Pozpiasts quality of the obtained paraamnos. Titsiloyy acid. Uprop, Itsl to:; ir (: i |; control of the process. THE PROBLEM OF THE PROBLEM; 1. Method of selection; 1app and aramiosalitsk lovo :; -:;:: slots from the solution salt, about tl and h and y p; n 11 with the fact that under;; s :: sye solutions are carried by r: put into a salt solution of parasaline alumine salt sour. t-l sulfur dioxide. 2. Acceptance of the method 1, from LI h and th ii; m and the fact that the first acidification is carried out with a bisulphate pulp before the preliminary separation of the resins after separation of the solid vapor from amino acid residues (ACID.